90155336806 has 4 divisors (see below), whose sum is σ = 135233005212. Its totient is φ = 45077668402.

The previous prime is 90155336767. The next prime is 90155336809. The reversal of 90155336806 is 60863355109.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90155336809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22538834200 + ... + 22538834203.

It is an arithmetic number, because the mean of its divisors is an integer number (33808251303).

Almost surely, 2^90155336806 is an apocalyptic number.

90155336806 is a deficient number, since it is larger than the sum of its proper divisors (45077668406).

90155336806 is a wasteful number, since it uses less digits than its factorization.

90155336806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45077668405.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 90155336806 in words is "ninety billion, one hundred fifty-five million, three hundred thirty-six thousand, eight hundred six".